Question

The structure of a prepared surface of material as revealed by a microscope above 25× magnification is called

Answer 1

The correct answer is - Microstructure.

The Microstructure is smallest scale structure of a given material. It is defined as the structure of a thin foil or a prepared surface of a given material which is revealed when viewed under a microscope that has above 25x magnification.

The microstructure of a material is capable of strongly influencing its physical properties like strength, ductility, toughness, hardness, resistance to corrosion, etc., which are all useful when these materials are used for industrial purposes.